Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time 601st c0d3-4-F00d 🇩🇪 873 61 6 May 2022 601st jackkav 873 61 26 Jun 2022 601st TechNolaByte 873 61 6 Jul 2022 601st Heathcorp 🇦🇺 873 61 17 Jul 2022 601st C0de5mith 🇺🇸 873 61 3 Aug 2022 601st sebipopa 🇷🇴 873 61 18 Aug 2022 601st moikaturns 🇬🇧 873 61 25 Sep 2022 601st FlorianCassayre 🇫🇷 873 61 27 Sep 2022 601st Mazn3k 873 61 1 Feb 2023 601st tvcv901 873 61 22 Mar 2023 601st unfinishedprogram 873 61 19 Jul 2023 601st snoozingnewt 🇺🇸 873 61 23 Sep 2023 601st funnyboy-roks 873 61 9 May 2024 601st bac0id 873 61 29 Jun 2024 601st madex 🇩🇪 873 61 9 Jul 2024 601st FortuiteMan 🇫🇷 873 61 10 Oct 2024 601st RobertHoeh 873 61 5 Apr 2025 601st LvLError 873 61 29 May 2025 601st Lv0Sys 🇵🇱 873 61 30 May 2025 601st miles-evan 873 61 5 Aug 2025 621st NerdyMcNerd42 873 64 26 Oct 2022 621st tpasfieldERAU 873 64 14 Nov 2022 621st CheeseCake628 🇳🇴 873 64 6 Jan 2023 621st adamnielson42 🇺🇸 873 64 25 Apr 2023 621st nathsou 🇫🇷 873 64 2 Sep 2023 621st zwxzwxzwx21 873 64 30 Jan 2024 621st steffan-polygolf 873 64 8 Mar 2024 621st Jacob385 873 64 4 Apr 2024 621st gallium-gonzollium 873 64 26 Aug 2024 630th johnnythedoggie 873 72 13 May 2022 630th kaascevich 873 72 8 Jul 2025 632nd DialFrost 🇸🇬 873 73 3 Jun 2025 633rd Shanethegamer 🇺🇸 872 66 4 May 2022 633rd scpchicken 🇵🇼 872 66 5 May 2022 633rd sisyphus-ppcg 🇦🇺 872 66 6 May 2022 633rd Natanaelel 🇸🇪 872 66 15 Jun 2022 633rd Z-snails 872 66 27 Feb 2023 633rd Jeremy-Stafford 872 66 27 Feb 2023 633rd alomiF 872 66 1 Sep 2023 633rd btnlq 872 66 17 Oct 2023 641st DialFrost 🇸🇬 872 86 24 Oct 2024 641st stefangimmillaro 872 86 14 Jan 2025 643rd HPWiz 🇳🇿 871 49 4 May 2022 643rd JayXon 🇺🇸 871 49 5 May 2022 643rd Steffan153 🇫🇮 871 49 10 Dec 2022 643rd ovs-code 🇩🇪 871 49 24 Oct 2023 643rd sean-niemann 🇺🇸 871 49 12 Jul 2024 648th dokutan 871 62 28 Apr 2025 649th c0d3-4-F00d 🇩🇪 871 89 5 May 2022 649th fkantelberg 871 89 15 Jul 2023 649th bac0id 871 89 26 Sep 2023 649th TRexOnGit 871 89 16 Feb 2024 649th arcpolaris 871 89 18 Nov 2024 654th inventshah 871 97 6 May 2022 654th roupiq 🇵🇱 871 97 22 Nov 2023 656th GolfingSuccess 🇬🇷 869 71 5 May 2022 656th emplv 🇱🇻 869 71 5 May 2022 656th JayXon 🇺🇸 869 71 7 May 2022 656th m-tkach 🇺🇦 869 71 15 May 2022 656th nwellnhof 🇩🇪 869 71 5 Jun 2022 656th Irratix 🇳🇱 869 71 13 Jun 2022 656th michael-pruglo 🇺🇦 869 71 13 Jul 2022 656th stefangimmillaro 869 71 2 Jun 2023 656th kkoenig 869 71 21 Dec 2023 656th JohandeRuiter 🇳🇱 869 71 14 Sep 2024 656th masinag 🇮🇹 869 71 6 Oct 2024 667th AlephSquirrel 869 80 20 Apr 2023 667th ashtraypettingzoo 🇺🇸 869 80 1 Apr 2024 669th janbehrens 🇩🇪 869 90 21 Apr 2023 669th Yewzir 🇧🇪 869 90 22 Apr 2023 669th DialFrost 🇸🇬 869 90 6 Nov 2023 669th Ripick 869 90 27 Nov 2024 673rd nwellnhof 🇩🇪 867 53 4 May 2022 673rd GrayJoKing 🇦🇺 867 53 6 May 2022 675th Shanethegamer 🇺🇸 866 70 12 Dec 2022 First Prev 601–675 of 3,343 Next Last